After privatization of Japanese National Railways (JNR) in 1987, the line was electrified in 1991. Before the JNR privatization, there were discussions to transfer the line to the Sagami Railway in order meet the expected demands of passenger traffic in the Tokyo and Yokohama suburbs. Because it had long been left as a non-electrified rural line, the cost to upgrade the line was beyond the ability of then financially constrained JNR; Sagami Railway, on the other hand, was running a profitable operation on its own line. However, the two companies did not agree on a deal, and plans to transfer the line were cancelled.

A short branch to Nishi-Samukawa Station from Samukawa Station was closed in 1984, and freight services ceased in 1998.